tegwin
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| posted on 25/11/07 at 06:27 PM |
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Sizing SWA cable
The saga continues...
Having found an electrican to certify my work I starting to get bits and pieces together to do the job...
But...
Can anyone shead some light on how to size SWA armoured cable correctly as im not 100% convinced about my method!
240V AC single phase
The cable is terminated from a 32A MCB, so the cable must be rated higher than this.
Maximum inrush start current to the compressors is 35A.
Given that the cable is to be three core and 25m long.
What is the minimum safe cable area/diameter?
[Edited on 25/11/07 by tegwin]
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caber
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| posted on 25/11/07 at 06:46 PM |
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Either 4mm squared or 6mm squared depends a bit on earth loop impedence, if in doubt go bigger!
Caber
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